AQUAREGIA is used to identify if metal is either gold or platinum.
It is a mixture of 3 parts hydrocloric acid and 1 part nitric acid. (Ex. mix - 1 1/2 liter hydrocloric acid and 1/2 liter nitric acid you get 2 liters of AQUAREGIA. )
AQUAREGIA dissolves gold and platinum if dipped in it.
It the metal on test does not dissolve in AQUAREGIA, then it is not real gold or platinum.
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